It was not until after the Synod of Oxford, in 1220, that the Red Cross of St. George supplanted the martlets of St. Edward, up to that date the patron of England. The Scottish Cross of St. Andrew has a fabulous history exactly similar to that of the _Labaram_ of Constantine, and dating back to the ninth century; but in neither England nor Scotland has a banner of any antiquity been preserved, unless we may enumerate as such the banner given to the citizens of Edinburgh by Margaret of Oldenburg, Queen of James III., in 1482, and still preserved there, under the local name of the Blue Blanket, or Banner of the Holy Ghost, on the displaying of which, not only the craftsmen of Edinburgh, but those of all Scotland, were bound to appear in arms, under the Convener of the Trades. The fragment of it that remains, shows that its colour was blue, crossed by the white saltire of St. Andrew. CHAPTER IV. FAMOUS AND ANCIENT CANNON. History shows us that in past ages there has ever and anon been in most countries a fancy for forging or casting ponderous cannon, even as there has been often in a spirit of rivalry, a fancy for building great ships; and the result has very generally been that, in both instances, there has been a mistake; for the great ships have been almost invariably cast away, and the great guns have proved useless, even for battery purpose; and it is not improbable that such may be the result eventually with our "Woolwich Infants" and our eighty-one ton guns. Though cannon are mentioned as having been used in a sea fight between a Moorish King of Seville and a King of Tunis in the 13th century, they first marked the inauguration of a new era in war when Edward III. of England brought with him to the field of Cressi in 1346, five small pieces, made by whom is quite unknown; but there can be little doubt that they were constructed in the mode of all early cannon, of iron bars fitted together, hooped with rings and charged with stone shot--not iron balls. Prior to Cressi, however, cannon had undoubtedly been used in sieges. In 1338 there was one used at Cambrai from which cross-bows were discharged, and several small guns of the same kind were used in the following year at the investment of Quesnoy; again at the siege of the then Moorish town of Algesiras, near Gibraltar, in 1342; and old annals tell us of the overwhelming terror their explosion excited among the enemy. Iron balls were first cast in the reign of Louis XI. in 1461; but stone were in common use for a hundred years later.